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#!/bin/bash
set_bootloader() {
if [ "x$BOOTLOADER" == 'xgrub' ]
then
set_grub_bootloader
else
return 0
fi
}
set_grub_bootloader() {
local GRUB_CONF='/boot/grub/grub.conf'
print_info 1 ''
print_info 1 "Adding kernel to $GRUB_CONF..."
# Extract block device information from /etc/fstab
local GRUB_ROOTFS=$(awk '/[[:space:]]\/[[:space:]]/ { print $1 }' /etc/fstab)
local GRUB_BOOTFS=$(awk '/^[^#].+[[:space:]]\/boot[[:space:]]/ { print $1 }' /etc/fstab)
# If /boot is not defined in /etc/fstab, it must be the same as /
[ "x$GRUB_BOOTFS" == 'x' ] && GRUB_BOOTFS=$GRUB_ROOTFS
# Translate block letters into grub numbers
local GRUB_ROOT_DISK=$(echo $GRUB_ROOTFS | sed -e 's/\/dev\/[hsm]d\([[:alpha:]]\)[[:digit:]]\+/\1/')
case $GRUB_ROOT_DISK in
a )
GRUB_ROOT_DISK='0' ;;
b )
GRUB_ROOT_DISK='1' ;;
c )
GRUB_ROOT_DISK='2' ;;
d )
GRUB_ROOT_DISK='3' ;;
e )
GRUB_ROOT_DISK='4' ;;
esac
# Translate partition numbers into grub numbers
local GRUB_ROOT_PARTITION=$(echo $GRUB_BOOTFS | sed -e 's/\/dev\/[hsm]d[[:alpha:]]\([[:digit:]]\+\)/\1/')
# Create grub configuration directory and file if it doesn't exist.
[ ! -e `basename $GRUB_CONF` ] && mkdir -p `basename $GRUB_CONF`
if [ ! -e $GRUB_CONF ]
then
# Check that $GRUB_ROOT_PARTITION is a single character
local GRUB_ROOT_PARTITION_TEST=$(printf $GRUB_ROOT_PARTITION | wc -c)
if [ "${GRUB_ROOT_PARTITION_TEST}" -ne '1' ]
# GRUB_ROOT_PARTITION is not a number; we can't work this out so... error
print_error 1 'Error! /boot/grub/grub.conf does not exist and the correct settings can't be automatically detected.'
print_error 1 'Please manually create your /boot/grub/grub.conf file.'
else
# grub.conf doesn't exist - create it with standard defaults
touch $GRUB_CONF
echo 'default 0' >> $GRUB_CONF
echo 'timeout 5' >> $GRUB_CONF
echo "" >> $GRUB_CONF
# Add grub configuration to grub.conf
echo "# Genkernel generated entry, see GRUB documentation for details" >> $GRUB_CONF
echo "title=Gentoo Linux ($KV)" >> $GRUB_CONF
echo -e "\troot (hd$GRUB_ROOT_DISK,$GRUB_ROOT_PARTITION)" >> $GRUB_CONF
if [ "${BUILD_INITRD}" -eq '0' ]
then
echo -e "\tkernel /kernel-$KV root=$GRUB_ROOTFS" >> $GRUB_CONF
else
echo -e "\tkernel /kernel-$KV root=/dev/ram0 init=/linuxrc real_root=$GRUB_ROOTFS" >> $GRUB_CONF
echo -e "\tinitrd /initrd-$KV" >> $GRUB_CONF
fi
echo "" >> $GRUB_CONF
fi
else
# grub.conf already exists; so...
# ... Clone the first boot definition and change the version.
cp $GRUB_CONF $GRUB_CONF.bak
awk 'BEGIN { RS="" ; FS="\n" ; OFS="\n" ; ORS="\n\n" }
NR == 2 {
ORIG=$0;
sub(/\(.+\)/,"(" KV ")",$1);
sub(/kernel-[[:alnum:][:punct:]]+/, "kernel-" KV, $3);
sub(/initrd-[[:alnum:][:punct:]]+/, "initrd-" KV, $4);
print RS $0;
print RS ORIG;}
NR != 2 { print RS $0; }' KV=$KV $GRUB_CONF.bak > $GRUB_CONF
fi
}
|
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